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CVE-2018-18730

24
FAUCET Score

CVE-2018-18730 describes a buffer overflow vulnerability in the web server (httpd) of several Tenda AC series routers, including AC7, AC9, AC10, AC15, and AC18. This flaw allows an unauthenticated attacker to remotely trigger a denial-of-service by sending a specially crafted POST request with oversized 'startIp' and 'endIp' parameters, overwriting the function's return address on the stack. Rated with a CVSS score of 7.5 (HIGH), this vulnerability has a low attack complexity and requires no user interaction, leading to high availability impact. There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
15.03.06.44_cnCPE matchmatch criteria
cpe:2.3:o:tenda:ac7_firmware:15.03.06.44_cn:*:*:*:*:*:*:*
15.03.05.19\(6318\)_cnCPE matchmatch criteria
cpe:2.3:o:tenda:ac9_firmware:15.03.05.19\(6318\)_cn:*:*:*:*:*:*:*
15.03.06.23_cnCPE matchmatch criteria
cpe:2.3:o:tenda:ac10_firmware:15.03.06.23_cn:*:*:*:*:*:*:*
15.03.05.19_cnCPE matchmatch criteria
cpe:2.3:o:tenda:ac15_firmware:15.03.05.19_cn:*:*:*:*:*:*:*
15.03.05.19\(6318\)_cnCPE matchmatch criteria
cpe:2.3:o:tenda:ac18_firmware:15.03.05.19\(6318\)_cn:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.14%
Probability of exploitation in next 30 days
EPSS Percentile
63.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0114 is in the 41st percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / ZIllR0/Routers/blob/master/Tenda/stack3.md
ExploitThird Party Advisory